Carbureter.



J. P. LAVIGNE.

CARBURETER.

APPLICATION FILED MAY 11, 1912. 1,067,351 Patented July 15, 1913 9v ze j 5 @Mum/1to1 A Joseph R Lavigne Wmme/ 01g Mmmm Y UNITED sTATEs PATENT oEEIoE.

JOSEPH P. LAVIGNE, OF DETROIT, MICHIGAN.

CARBURETER.

To all 'whom it may concern:

ABe it known that I, JOSEPH P. LAVIGNE, a citizen of the United States of America, residing at Detroit, in the county of Wayne and State of Michigan, have invented certain new and useful Improvements in Carbureters, of which the following is a specification, reference being had therein to theA accompanying drawings.

This invention relates to carbureters for internal combustion engines and the like and to an arrangement thereof whereby shock to the moving parts, which frequently results in crystallization and fracture is avoided and whereby an effective priminr device is obtained without complication ofj the valve mechanism.

The invention consists in the matters hereinafter set forth, andA more particularly pointed out in the appended claim.

The drawing is a view in longitudinal sectiouof a Naive that embodies features of the invention.

As herein shown in preferred Vform a cas ing 1 of suitable material and design has a lateral inlet nipple 2 and an annular valve seat 3 with beveled face, the seat being in axial alin'ement with a boss 4 formed in the interior of the casing. The casing is slightly enlarged above the valve seat and has an outlet nipple 5 in which a fitting 6 is detachably secured, the latter forming a convenient means of attachment to the intake pipe or manifold of an engine or the like. cylindrical stud 7 is secured in a cross bar or bridge 8 of the fitting invaxial alinement with a guide opening in the'bosset througl. which the depending stem 20 of a priming;- member extends. The latter has au axial socket. into the upper portion of which the stud 7 extends, the head of the primer abutting the upper face of the boss. A spring 9 in cou'ipression between the bottom of the stem socket` and the stud 7 normally holds the primer projected from the Casing. A needle valve controls a fuel inlet duct 10 whose outlet is in the beveled face of the annular seat 3. This valve may be of any preferred type with suitable-packing gland 11 and preferably has a milled head 1Q engaged by a suitably disposed friction or spring finger lf3 whereby graduatious on the head may be utilized to indicate the extent of opening of the valve.

A disk closure 14 is adapted to seal the annular seat 3, and is held iu proper aline- Specicaton of Letters Patent.

Application filed May 11, 1912.

Patented July 15, 1913.

Serial No. 696,766.

ment therewith by a longitudinally apertured sleeve 15 in sliding engagement onvthe stud 7. The lower end face of the sleeve washer or ferrule 17 of suitable material, I

that is preferably inset in the bridge 8 in a recess around the stud. The upward motion of the disk is likewise resisted yieldingly by a suitably disposed Spring 18 encircling thestud in compression between the closure and the bridge, the latter having an annular channel indicated at 19 or being otherwise fitted to receive the upper coil-of the spring.

In operation the needle valve is opened to permit the admission of fuel through the duct 10 provision being made on the casing exterior for, suitable connection with a pipe leading from a source of fuel supply. Thereafter under the suction of the lnotor or like devices to which the valveis attached, the closure 14 lifts, permitting the simultaneous injection of fuel and the inrushing of air, the resultant vapor being drawn through the valve outlet. In orderto start the v a'lve or prime it, the operator may lift the closure b y pushing up the primer after having opened the fuel valve.

The construction of the closure stem with the cushioning effect of the stop, effectively prevents crystallization of the closure and consequent breakage under usage, a fault coimnon to closures of the ordinary type. The construction is simple and the parts are easily made, assembled or removed for repair or replacement.-

(`)bviously, changes in the details of construction may be made without depart-ing from the spirit of the invention and I do n ot careito limit myself to any particular form or arrangement of parts.

lVhat I claim is:

A carburetor comprising a casing having longitudinally reciprocable in the guide aperture of the boss With an axial socket through the casing Whose outlet in the an- 10 entered by the stud, a spring in oomnular valve seat 1s sealed by the closure pression hetveen the base ofthe socket and when the latter is seated.

the stud for normally projecting the primer; In testimony whereof I aix my signature a closure for the seat, a, sleeve on the closure in presence of two Witnesses.

longitudinally' reeiprooable therewith on the JOSEPH P. vLAVIGNE.

stud, a stop cushion inset in the fitting lVitnesses:

around thestfud, and an' adjustable fuel ANNA M. Donn, valve controlling the inlet of the duct A. M. SHANNON. 

